[INFO] fetching crate memegeom 0.1.0...
[INFO] documenting memegeom-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate memegeom 0.1.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate memegeom 0.1.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate memegeom 0.1.0
[INFO] finished tweaking crates.io crate memegeom 0.1.0
[INFO] tweaked toml for crates.io crate memegeom 0.1.0 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27fa331c3e4ff08fed8af2f21b4db2b1ad2d07330c2c003f16485546ad7e8c9a
[INFO] running `Command { std: "docker" "start" "-a" "27fa331c3e4ff08fed8af2f21b4db2b1ad2d07330c2c003f16485546ad7e8c9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27fa331c3e4ff08fed8af2f21b4db2b1ad2d07330c2c003f16485546ad7e8c9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27fa331c3e4ff08fed8af2f21b4db2b1ad2d07330c2c003f16485546ad7e8c9a", kill_on_drop: false }`
[INFO] [stdout] 27fa331c3e4ff08fed8af2f21b4db2b1ad2d07330c2c003f16485546ad7e8c9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b861525309ebb057958c40c394d37ea690b46569f152bbf39b07dc2d064bad27
[INFO] running `Command { std: "docker" "start" "-a" "b861525309ebb057958c40c394d37ea690b46569f152bbf39b07dc2d064bad27", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking rust-dense-bitset v0.1.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking auto_ops v0.3.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking safe_arch v0.6.0
[INFO] [stderr]     Checking wide v0.7.4
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking earcutr v0.2.0
[INFO] [stderr]     Checking simba v0.7.1
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking nalgebra v0.30.1
[INFO] [stderr]  Documenting memegeom v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | #![feature(array_chunks, array_windows, drain_filter)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 | #![feature(array_chunks, array_windows, drain_filter)]
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:40:41
[INFO] [stdout]    |
[INFO] [stdout] 40 | #![feature(array_chunks, array_windows, drain_filter)]
[INFO] [stdout]    |                                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `memegeom`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name memegeom src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=cfd15c8fd206c6ec -L dependency=/opt/rustwide/target/debug/deps --extern approx=/opt/rustwide/target/debug/deps/libapprox-16caab8193b1dc80.rmeta --extern auto_ops=/opt/rustwide/target/debug/deps/libauto_ops-0392e5547159fee2.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-88a9e53cdfd91919.so --extern earcutr=/opt/rustwide/target/debug/deps/libearcutr-73f3fe3bd9a5946c.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-179fb8f1441418c7.rmeta --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-9ce41f2321f17415.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-393cd746f87d01d9.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-c9ee2f9949aa542a.rmeta --extern rust_dense_bitset=/opt/rustwide/target/debug/deps/librust_dense_bitset-13ea8952c2b59aa5.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-33b212c856b2eb43.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-636fbe01812edaf1.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b861525309ebb057958c40c394d37ea690b46569f152bbf39b07dc2d064bad27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b861525309ebb057958c40c394d37ea690b46569f152bbf39b07dc2d064bad27", kill_on_drop: false }`
[INFO] [stdout] b861525309ebb057958c40c394d37ea690b46569f152bbf39b07dc2d064bad27